Решите систему уравнений {5 (x+1)+y-0,5=12, {y-x+1,5=0

Решите задачу:

$\left \{ {{5(x+1) + y -0.5 = 12} \atop {y - x +1.5 =0 }} \right. \\ \\ \left \{ {{5x+5+y-0.5=12} \atop {-x+y=-1.5}} \right. \\ \\ \left \{ {{5x+y=7.5} \atop {-x+y=-1.5}} \right. \\ \\ \left \{ {{6x=9} } \right. \\ \\ \left \{ {{x=1.5} } \right. \\ \\ \left \{ {{-1.5+y=-1.5} } \right. \\ \\ \left \{ {{x=1.5} \atop {y=0}} \right.$